Seems it may be a good idea to raise the bottom a bit, so that some of the rim is exposed. Less aero, but if you have a flat you won't grind the cover on the pavement. The fronts should give you a good 1.5-2 mph in the 30-40 range.

Yeah, I might have to raise it up; but after making these changes after the fact (after destroying my plug!), it will be easier now to increase the ground clearance if I find that necessary, by adding material into the bottom of the mold, and it may indeed come to that.

At this point I want to make the part so I can install and try it.

__________________Dan>>>>>>>>>>>>>""In war, truth is the first casualty."
--Aeschylus

What a great set of posts and pics we can learn from too! My rear wheel fairing bottoms out too often to be useful in anything but the smoothest roads or on a track. Maybe your suspension can be stiff enough to prevent that?

__________________When's the last time a motorist yelled Wheeeeeeee! going downhill?

Finally got the modifications done to the mold that I wanted to make; on the part that will be closest to the ground, I brought the front and rear portions in closer to the wheel, to lessen any ground strikes, and also added in the slight angle so that it matches up better with the tail cone.

Made up a part last night, and I'm pleased with the changes that I made. Here's the mold after taking out the part, haven't cleaned up the vacuum bagging yet.

And the part released very well, which I was extremely happy about! The part came out of the mold while I was still removing peel ply fabric from the part:

Unfortunately I'm going to have to do one more change, to give additional ground clearance. Not sure where I went astray on the design, I was sure that I had allowed for more ground clearance in the design

But I'm going to start on design of the front wheel pants now, and work on the 2 molds simultaneously. One of the frustrating aspects is having to wait for gel coat to cure enough so that I can sand and polish it.

__________________Dan>>>>>>>>>>>>>""In war, truth is the first casualty."
--Aeschylus

Finally! Done with the rear wheel pants mold, and made my first actual part to be used.

We have been fortunate to have very warm weather yesterday and today (forecast for 70 degrees today!), so I'm taking a break on wheel pants work and getting my lazy butt out and riding. But I did cut the hole into the new part for the wheel, and drilled the 2 holes for mounting. I picked up Hockey tape off Amazon, and installed the new wheel pant yesterday. Went for a short ride around the block (8 miles), and no issues, no ground strikes

I think this ground clearance is good, just up to the rim of the wheel, spokes are all enclosed:

And I started work last week on making the plug for the right front wheel pant. After yesterday's ride, where I was making sharp turns and hanging my head over the edge to see just how much the front wheels were turning, I decided to streamline my mold some more. Essentially I was giving way too much latitude in my design for wheel clearance than I needed to.

So, narrowing up my plug design; I don't want them to look like suitcases hanging off the sides, but I also don't want to restrict my turning radius too much. Reducing the width :

__________________Dan>>>>>>>>>>>>>""In war, truth is the first casualty."
--Aeschylus